Perhaps you should try some spelling variations:
"trinh may phan snippets" » "trinh ky phan snippets", "trinh han phan snippets", "trinh ly phan snippets", "trinh may phay snippets", "trinh may phat snippets", "trinh mau phan snippets", "trinh may phan slippers"
"dung dung code snippets" » "duong dung code snippets", "ung dung code snippets", "dung ung code snippets", "dung dung cong snippets", "dung dung co snippets", "dung dung de snippets", "dung dung code slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("trinh may phan snippets") or ("dung dung code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh may phan snippets") OR ("dung dung code snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("trinh may phan snippets") or ("dung dung code snippets"))) or ("locating bug code snippets"))*.